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The arbor of router bit and pad holder's arbor is 5/8"-11 Female Thread.

Not M14 Thread.

This package carries (a)-(c):

(a)

1 Piece of V25 (25mm / 1")

Diamond Brazed Full Bullnose Router Bit/Profile

for 25MM High or Thick stone concrete (5/8"-11 female Thread arbor).

(b) 1 Piece of 4 Inch aluminum backer / pad holder (5/8"-11 Female Thread arbor).

and 8 Pieces of 4 inch Diamond Polishing pad for stone concrete granite marble travertine (wet or dry use. wet use recommended).

1 X Grit 50 100 200 400 800 1500 3000 10000.

(c) 12 Pieces Waterproof Permanent Paint Marker Pen Car Tyre Tire Tread Rubber Metal Granite Marble Ceramic:

Color : Black, Red, Blue, Green, Yellow, Purple, Orange, Brown, White, Gold, Silver, Pink

Before use, shake the pen body up and down several times, so that the ink mixed evenly.

Open the lid, erect the pen, nib up, and press the nib with your hand for about 3-4 seconds.